Method for regulating and controlling water quality of fully enclosed circulation sea-water industrial mariculture

A fully enclosed technology for aquaculture water quality, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. Achieve the effect of saving electric energy and water energy, saving water energy and electric energy, and increasing the production of aquaculture

Inactive Publication Date: 2012-02-15
河北省水产研究所
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Problems solved by technology

The existing aquaculture technology adopts open flowing water or semi-flowing water aquaculture, the water quality is easy to treat, and the bait is mainly low-quality miscellaneous fish and miscellaneous shrimp. The waste of fishery resources is serious, the cost of aquaculture is high,

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  • Method for regulating and controlling water quality of fully enclosed circulation sea-water industrial mariculture
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  • Method for regulating and controlling water quality of fully enclosed circulation sea-water industrial mariculture

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Embodiment Construction

[0027] The following examples serve to illustrate the invention.

[0028] Take Jiangpeng Aquaculture Science and Technology Development Co., Ltd. in Qinhuangdao, Hebei Province, as an example by using the present invention to carry out the recycling treatment of aquaculture wastewater. For details on the aquaculture water cycle, see figure 1 .

[0029] The method applied in this embodiment includes the following steps:

[0030] (1) The sea water source is purified by the sedimentation tank, and the salinity and temperature are adjusted to supply water to the breeding pond;

[0031] The water temperature is controlled at 15-17°C and the salinity is 28-30‰.

[0032] (2) After the aquaculture wastewater discharged from the aquaculture pond flows into the water collection tank through the sewage tank, it is sent to the filter device for mechanical filtration, so that the aquaculture wastewater is separated from the solid and liquid, and the particles with a particle size of 60 ...

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Abstract

The invention discloses a method for regulating and controlling the water quality of fully enclosed circulation sea-water industrial mariculture, comprising the following steps: (1) purifying water source of seawater through a sedimentation basin, regulating salinity and temperature, then supplying water to a culture pond; (2) letting the culture waste water discharged from the culture pond flow into a water collecting tank through a sewage tank, and putting the culture waste water to a filter unit for mechanical filtering; (3) dynamically lifting water to high position for sand filtration; (4) carrying out biological treatment in a biological filter which is filled with brushes as biological carriers; and (5) carrying out sterilization with vitalight lamp radiation, and then returning to the culture pond for recycling. The results of trial culture with the invention show that: the removal rates of three nitrogens of the processed water are all exceed 70 %, the removal rate of NO3<->-N exceeds 80 %; the bacterial index is reduced by 85.05 %, DO is increased to a certain extent, and the pH value is increased slightly; the indexes of water quality after treatment achieve the water standards of mariculture, simultaneously, culture output is increased, and the hydroenergy and electric energy are saved.

Description

technical field [0001] The invention relates to a water quality control method for industrialized aquaculture, which belongs to the technical field of aquaculture. Background technique [0002] The fully enclosed circulating seawater factory culture is based on the original factory culture, equipped with circulating water purification facilities and equipment, using physical, chemical, biological and other purification methods to transform the breeding wastewater into reusable breeding water, using high-quality artificial A highly intensive farming method with feed and management techniques. The existing aquaculture technology adopts open flowing water or semi-flowing water aquaculture, the water quality is easy to treat, and the bait is mainly low-quality miscellaneous fish and miscellaneous shrimp. The waste of fishery resources is serious, the cost of aquaculture is high, and it is very easy to be restricted by the external marine environment. The discharged sewage will ...

Claims

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Application Information

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IPC IPC(8): C02F9/14
CPCY02W10/37
Inventor 赵振良孙桂清穆珂馨杨香菊张占丰韩青动赵海涛鱼宏伟裴恩杰赵丽瑾
Owner 河北省水产研究所
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